@scope (.quiz-root[data-exam-id="ds-lesson02-tense"]){:scope{--bg:#eef0f8;--bg-warm:#e4e7f2;--card:#ffffff;--text:#15163a;--text-secondary:#4a4d6a;--text-muted:#797c94;--accent:#5d5fa8;--border:rgba(21,22,58,0.08);--border-visible:rgba(21,22,58,0.12);--shadow-sm:0 1px 2px rgba(40,45,90,0.05),0 4px 12px rgba(40,45,90,0.08),inset 0 1px 0 rgba(255,255,255,0.5);--shadow:0 2px 4px rgba(40,45,90,0.06),0 8px 24px rgba(40,45,90,0.12),inset 0 1px 0 rgba(255,255,255,0.6);--shadow-lg:0 4px 8px rgba(40,45,90,0.06),0 16px 48px rgba(40,45,90,0.15),inset 0 2px 0 rgba(255,255,255,0.7);--radius:20px;--radius-sm:12px;--fs-qtext:clamp(17px,1.3vw,19px);--fs-base:clamp(15px,1.1vw,17px);--cat-basic:#5d5fa8;--cat-basic-light:#ecedf7;--cat-comm:#4a8db8;--cat-comm-light:#e8f1f8;--cat-advanced:#8a5ba6;--cat-advanced-light:#f2eaf5;--syntax:#6d70c2;--syntax-light:#edeff9;--pos:#4a8db8;--pos-light:#e8f1f8;--modify:#5d5fa8;--modify-light:#ecedf7;--classify:#8a5ba6;--classify-light:#f2eaf5}.home-title em{font-style:normal;background:linear-gradient(135deg,var(--syntax) 0,var(--pos) 50%,var(--classify) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--syntax),var(--classify));border-radius:100px;width:0}.toggle-btn.vocab{background:var(--modify);color:white}.toggle-btn.hint{background:var(--syntax);color:white}.toggle-btn.answer{background:var(--classify);color:white}.qnum{display:inline-block;font-weight:700;font-size:12px;color:var(--accent);background:var(--syntax-light);padding:4px 12px;border-radius:100px;margin-bottom:12px}.choices{background:var(--modify-light);border-left:3px solid var(--modify)}.scramble{background:var(--pos-light);border-left:3px solid var(--pos);font-family:JetBrains Mono,SF Mono,Monaco,monospace}.vocab-box{border-left:3px solid var(--modify)}.hint-box,.vocab-box{background:var(--card)}.hint-box{border-left:3px solid var(--syntax)}.hint-item{padding:8px 0;border-bottom:1px solid rgba(109,112,194,.15)}.ans-box{background:var(--card);border-left:3px solid var(--classify)}.choice-exp{padding:8px 0;font-size:16px;line-height:1.6;border-bottom:1px solid rgba(138,91,166,.12)}.choice-exp.correct{color:var(--classify);font-weight:600}.vocab-word{font-weight:700;color:var(--modify);margin-right:8px}.jp-text{color:var(--text-secondary);margin-top:12px;padding-bottom:12px;font-size:16px;border-bottom:1px solid rgba(138,91,166,.15)}.grammar-ref{background:var(--pos-light);border-left:3px solid var(--pos);padding:12px 14px;border-radius:var(--radius-sm);font-size:15px;margin-top:12px}@media (max-width:768px){.mobile-nav-btn.active{color:var(--accent);background:var(--syntax-light)}}}html.dark .quiz-root[data-exam-id=ds-lesson02-tense],html[data-theme=dark] .quiz-root[data-exam-id=ds-lesson02-tense]{--bg:#10111e;--bg-warm:#181a28;--card:rgba(26,28,44,0.92);--card-solid:#1a1c2c;--text:#eef0f8;--text-secondary:#a4a7c0;--text-muted:#878aa2;--accent:#8487d0;--border:rgba(255,255,255,0.06);--border-visible:rgba(255,255,255,0.1);--shadow-sm:0 2px 8px rgba(0,0,0,0.35),0 0 0 1px rgba(255,255,255,0.03),inset 0 1px 0 rgba(255,255,255,0.05);--shadow:0 4px 20px rgba(0,0,0,0.5),0 0 0 1px rgba(255,255,255,0.04),inset 0 1px 0 rgba(255,255,255,0.06);--shadow-lg:0 12px 40px rgba(0,0,0,0.6),0 0 0 1px rgba(255,255,255,0.05),inset 0 1px 0 rgba(255,255,255,0.08);--cat-basic:#8487d0;--cat-basic-light:rgba(93,95,168,0.15);--cat-comm:#6eabd6;--cat-comm-light:rgba(74,141,184,0.15);--cat-advanced:#b286c4;--cat-advanced-light:rgba(138,91,166,0.15);--syntax:#9a9cde;--syntax-light:rgba(154,156,222,0.12);--pos:#6eabd6;--pos-light:rgba(110,171,214,0.12);--modify:#8487d0;--modify-light:rgba(132,135,208,0.12);--classify:#b286c4;--classify-light:rgba(178,134,196,0.12);background:var(--bg);background-image:radial-gradient(ellipse 100% 80% at 50% 0,rgba(154,156,222,.06) 0,transparent 50%),radial-gradient(ellipse 80% 60% at 20% 100%,rgba(110,171,214,.05) 0,transparent 40%),radial-gradient(ellipse 60% 50% at 80% 80%,rgba(178,134,196,.05) 0,transparent 40%),linear-gradient(135deg,#10111e,#141624 50%,#0d0e19);background-attachment:fixed}